Proper title selection is a very important issue in Chinese book cataloging, it relates to the quality of titlesearch point and has key meaning to open out the content of cataloging document.
正题名的选取是中文图书编目的重要问题，关系到题名检索点的质量，对文献内容的揭示具有关键意义。
2
Users therefore can search by title, by author, by subject, and often by keyword.
所以用户们可以根据标题、作者、主题，经常是关键字来搜索。
《柯林斯英汉双解大词典》
3
If you want to search the library holdings and don't know the author's name or the exact title of the book or an article, you have to set up a keyword search.